
class Human {

    public String name ;

    public void show(){
        System.out.println( this.name );
    }

}

public class Sinaean extends Human {

    public int age ;

    public void introduce(){
        System.out.println( "我叫" + this.name + " , 今年" + this.age );
    }

    public static void main(String[] args) {
        
        Sinaean s = new Sinaean();
        s.name = "欧阳锋" ;
        s.age = 40 ;
        s.show();
        s.introduce();

    }

}
